7.12a

What is the primary role of decomposers in an ecosystem?

• To produce their own food

• To eat other predators

• To break down dead organisms

• To consume plants only

Tags

NGSS.MS-LS2-3

Which of these is an example of a primary consumer?

• Eagle

• Grasshopper

• Snake

• Lion

What are organisms called that can make their own food?

• Heterotrophs

• Carnivores

• Herbivores

• Autotrophs

In an energy pyramid, which level contains the most energy?

• Secondary consumers

• Tertiary consumers

• Primary consumers

• Producers

Tags

NGSS.MS-LS2-3

If a disease killed many plants in an ecosystem, how would this most likely affect the food web?

• Only decomposers would be affected

• It would increase herbivore populations

• Predator populations would decrease

• Energy flow would increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

How might deforestation of a large area affect the energy flow in an ecosystem? Analyze the potential cascade of effects.

• Only plant species would be affected

• The ecosystem would quickly recover

• Energy flow would be disrupted at all levels

• Predator populations would increase

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Chameleons are reptiles that have the ability to hide from predators and prey by blending in with their environment. They can change the pattern and/or color of their skin. This ability is known as --

• natural selection

• imitations

• mimicry

• camouflage

Adaptation is...

• a change or the process of change by which an organism or species becomes better suited to its environment.

• a change or process that causes no change in a species.

• a change or the process of change by which an organism or species is not able to adapt and survive.

• a change or process in a species that helps it become bigger or smaller.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS4-4

What will most likely happen to a species if the environment changes more quickly than the species can adapt?

• become more diverse

• evolve

• become extinct

• overpopulate

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-1

NGSS.MS-LS4-4

Which adaptation and function would best suit a camel?

• Adaptation: two rows of long eyelashes Function: protect against blowing sand

• Adaptation: thick fur and under wool Function: keep out blowing sand

• Adaptation: long, strong legs Function: protect it from burns when it kneels on the hot desert sand

• Adaptation: nostrils can be closed Function: help it survive long periods without food and water